Coins and Sizes
Because every coin has its own size and thickness, there are some size restrictions that are dependent on the coin you start with. Here’s a handy chart to see if the coin you want is available in the size you need.
| Coin | U.S. Ring Size |
| U.S. Quarter Dollars; Common, State and State Park | 4.5 -11 |
| Half Dollars: Kennedy, Walking or Sitting Liberty, Barber, Morgan (dollars) | 4.14 |
| Presidential Dollars: | 5-11 |
| Foreign coin ring sizes will be estimated to be as close to the sizes of the U.S. coin they match size wise. |